Resonant Tidal Excitations of Inertial Modes in Coalescing Neutron Star Binaries

Details Resonant Tidal Excitations of Inertial Modes in Coalescing Neutron Star Binaries Resonant Tidal Excitations of Inertial Modes in Coalescing Neutron Star Binaries

2006-04-07

arxiv.org/abs/astro-ph/0604163v2

Phys.Rev. D74 (2006) 024007

Astronomy and Astrophysics

Astrophysics

Minor changes. 6 pages. Phys. Rev. D. in press (volume 74, issue 2)

Scientific paper

10.1103/PhysRevD.74.024007

We study the effect of resonant tidal excitation of inertial modes in neutron stars during binary inspiral. For spin frequencies less than 100 Hz, the phase shift in the gravitational waveform associated with the resonance is small and does not affect the matched filtering scheme for gravitational wave detection. For higher spin frequencies, the phase shift can become significant. Most of the resonances take place at orbital frequencies comparable to the spin frequency, and thus significant phase shift may occur only in the high-frequency band (hundreds of Hertz) of gravitational wave. The exception is a single odd-paity $m=1$ mode, which can be resonantly excited for misaligned spin-orbit inclinations, and may occur in the low-frequency band (tens of Hertz) of gravitational wave and induce significant (>> 1 radian) phase shift.

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